This is a bluetooth shield with slave/master capabilities. Have a look whats available in the shop.
It still contains the features of the normal prototype shield such as a power LED and a swichable LED.
In addition there is a reset switch and a switch which can be connected to an input pin.
It is based on the bluetooth modem pictures below. On the seedstudio site there is a good description of this module.
The bluetooth shield also has some leds to show communication happening in real time so you can easily monitor if the shield is functioning.
There are many example on the net describing applications for such a feature. I especially like the Roomba interface which you can find here
I will soon also publish a small story of how i managed to make this project. Cool.
bluetooth shield eagle pics